Question : Directions: What will come in the place of ? in the following equation, if + and – are interchanged and × and ÷ are interchanged?
55 + 42 × 7 ÷ 11 – 30 = ?
Option 1: 25
Option 2: 11
Option 3: 22
Option 4: 19
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Correct Answer: 19
Solution :
Given:
+ and – and × and ÷
55 + 42 × 7 ÷ 11 – 30 = ?
After interchanging the signs, the new equation is –
= 55 – 42 ÷ 7 × 11 + 30
= 55 – 6 × 11 + 30
= 55 – 66 + 30
= 85 – 66
= 19
Therefore, the required answer for the equation is 19. Hence, the fourth option is correct.
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